You might as well compare with these Back Items so you can decide which Back Items you're gonna use for ninja Saga Pvp or in Hunting House for easier killing the boss or your opponent in ninja saga PvP
These Back Items might have better effect . Here we go :

• S21 Rokulin Gunbai

  Ignore enemys dodge rate by 8%.
• First-Aid Kit

  100% of the purchase price will be donated to Japan earthquake relief.
• Kettle
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• Ice Cystal Raijinco
• Red Shuriken Skis
• Curved Spear
• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.
• Champion Cup!

  Ultimate prize for Champions.
• Dark Plate Twin Blades
• Wind Storm Raijinco
• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• Trident
• Shadow Umbrella
• S42 Hanbing Hammer

  8% chance to convert damage taken to HP positively.
• Apricot Pipa
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Dual Blade of Fire

  Increase 3% damage made, recover self 2% HP each turn.
• S57 Magatama Gunbai

  Increases dodge rate by 5% and restores 4% of users max HP every turn.
• Spinning Wheel

  Recover user's max HP by 1% each turn. Increases user's max CP by 2%. Converts 10% of damage taken into CP.
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• Businessman Luggage
• Yolanda Rescue First Aid Kit
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• Tail of Capricorn

  Increases dodge rate by 4%. Recovers 3% HP with every charge.
• Swire Raijinco
• Folding Paper Fan